Blender Lag Issues

[ISO_3864]

I use to have the old Blender on my old iMac mini, until it broke down, so we upgraded to a used mac mini from 2011, but when i had to install the new Blender, It lags in the layout so much and it doesn't stop! plz help meh ): it never was like this on the old one..

[still__alive]

Originally posted by NinBoiYT:

...a used mac mini from 2011...

This might be your problem, the computer might be a bit old at this point to run Blender properly. 2011 is quite old for a computer I think. I'm kind of suprised that a computer from 2011 can even run 2.8 at all.

Originally posted by NinBoiYT:

It lags in the layout so much and it doesn't stop

The one thing I can think of is maybe make sure you don't have it set to rendered viewport, that could slow it down on an older computer. Make sure it is in solid display mode.

Originally posted by NinBoiYT:

I use to have the old Blender .... i had to install the new Blender......it never was like this on the old one..

You can still use the old Blender, you just have to get it from the official site instead of Steam.

[ISO_3864]

ok, ty for the reply. btw, if I didn't say in the desc, I got Blender from the official site, not steam, but it prob will say that i have it though. that is true, but i only got it to see if i could fix anything..

[Stretchyf]

Originally posted by still__alive:

This might be your problem, the computer might be a bit old at this point to run Blender properly. 2011 is quite old for a computer I think. I'm kind of suprised that a computer from 2011 can even run 2.8 at all.

Mine is from 2012 (mostly), but it is full-sized PC. Not sure that I need something better even in 2020

It is depends on the specs I suppose. Especially GPU is important. It should be supporting OpenGL 3.3. GPUs from 2008 and up are supporting OpenGL 3.3. But even old GPU with OpenGL 3.3 can be a problem. For example When I tried using nVidia GTX 260 (supported according to Blender website) Eevee was unbearably slow in 2.80 with AO and Screen space reflections. They fixed it in 2.81 but added some bugs into visualization and working become impossible. And in all versions 2.80 and up I was getting random crashes when going to material preview or rendered type of shading. Of course working is almost impossible in that circumstances.

[*P0P$*FR3$H3NM3Y3R*]

Well as with everything an old GPU might technicly be supported, but what useis that if there is way to few video ram and performance to actually have a proper viewport. While a GTX260 could eventually start the program it will still fail to deliver an acceptable workflow in most cases.
Knife to a gunfight sort of situation.

BTW: You can rollback to old blender versions in STEAM using the Beta tab, if that matters to anyone.

[Stretchyf]

*P0P$*FR3$H3NM3Y3R*, if you were answering to me then my home PC's GPU is Radeon R9 290 and Blender is working perfectly.

Actually GTX260 have enough ram and performance for my tasks. Viewport is working great even with all Eevee effects on... if not some drawing of geometry noise not present in the scene and these crashes. So it is either driver issues or Blender wasn't really tested with GTX 260. It is sad actually.

[*P0P$*FR3$H3NM3Y3R*]

No offense, but why would the blender institute waste their time on testing on 12 year old graphics cards? That sort of ancient hardware is more of an edge case than the norm, i'd rather have them improve features and eventually raise the bar of hardware specs, than holding back features for compatibility with outdated hardware, thats what the contempary older blender versions are there for :D

[still__alive]

Originally posted by stretchyf:

[
It is depends on the specs I suppose. Especially GPU is important. It should be supporting OpenGL 3.3. GPUs from 2008 and up are supporting OpenGL 3.3. But even old GPU with OpenGL 3.3 can be a problem. For example When I tried using nVidia GTX 260 (supported according to Blender website) Eevee was unbearably slow in 2.80 with AO and Screen space reflections. They fixed it in 2.81 but added some bugs into visualization and working become impossible. And in all versions 2.80 and up I was getting random crashes when going to material preview or rendered type of shading. Of course working is almost impossible in that circumstances.

Yeah it depends on specs. I was, or am, just making a guess based on the OP's stated 2011 age of the PC and that it is a Mac Mini, whatever that is. I assumed it means even less computing power if the components have been miniaturized and are smaller than their normal counterparts.

Originally posted by *P0P$*FR3$H3NM3Y3R*:

BTW: You can rollback to old blender versions in STEAM using the Beta tab, if that matters to anyone.

You can, but last time I checked they removed the 3 or 4 different options they used to have available and now the only version you can roll back to is just 2.79, I think. Not a big deal though, probably only need any one pre 2.8 version anyway. Unless you have addons that need a very specific version I guess.

[Stretchyf]

Originally posted by *P0P$*FR3$H3NM3Y3R*:

No offense, but why would the blender institute waste their time on testing on 12 year old graphics cards? That sort of ancient hardware is more of an edge case than the norm, i'd rather have them improve features and eventually raise the bar of hardware specs, than holding back features for compatibility with outdated hardware, thats what the contempary older blender versions are there for :D

You cannot load a .blend made in 2.80+ in previous version. So I cannot take my .blend I'm working at home with me to a GTX 260 setup and continue my work there.

But while I disagree I'm not filling the bug-report because I also consider GTX260 a border case and don't want to bother developers with it. They mostly are declaring a "known issue" anything that not crashes Blender and either not in line with their plans or can't be fixed in an hour. And I feel it is a sad situation with resources available to them now. 2.82 is unbelievably buggy to me.

[*P0P$*FR3$H3NM3Y3R*]

Yeah agree that the backwards compatibility is a bit of a nuisance :/ But 2.8 has so much different and better features that prevented the use in older versions. First and foremost the new collections and the new principled shader. Bit of a bumpy transition.

@still_alive
oh didn't notice they removed some of the old builds. Too bad. Guess it is the good old blender site or graphicall then for the legacy downloads. Thanks for the heads up.