Remember to disable v-sync.

[Euphytose]

Just a quick reminder to disable v-sync through your driver's control panel.
The game has no built-in option but it works just fine through the driver.
Don't worry about overheating as the game caps itself at 60 frames regardless of what setting you use.
This will roughly halve the input delay, making the game much more enjoyable and also much easier.

[Sticky White Stuff]

What about screen tearing? I always use V-Sync + Triple Buffering on every game.

[Nachoman]

why should I?

[Redronn]

Tested disabling vsync and I didn't notice any difference, and I think this game might run in borderless windowed mode by default.

When I alt+tab out of it, the game stays in the background, and that doesn't usually happen with games running in fullscreen. Alt+tabbing is also instant, which is another sign that it's borderless windowed.

[Citronvand]

If the game has no built-in option for vsync why is there a "VSync=1" line in the options.ini...

[Euphytose]

Originally posted by Citronvand:

If the game has no built-in option for vsync why is there a "VSync=1" line in the options.ini...

I usually only edit files if there's no other way. So yes it has a built-in option, just not accessible through the menu, good to know.

Originally posted by Stab Variation:

What about screen tearing? I always use V-Sync + Triple Buffering on every game.

Tearing isn't an issue at all for me. It may be to some people. If this bothers you, keep v-sync. But I prefer tearing rather than increased input delay, especially for fast games like this one.

[Athéri System]

I kinda wish they would add an option for it in game.

[Sticky White Stuff]

Originally posted by Euphytose:

Originally posted by Citronvand:

If the game has no built-in option for vsync why is there a "VSync=1" line in the options.ini...

I usually only edit files if there's no other way. So yes it has a built-in option, just not accessible through the menu, good to know.

Originally posted by Stab Variation:

What about screen tearing? I always use V-Sync + Triple Buffering on every game.

Tearing isn't an issue at all for me. It may be to some people. If this bothers you, keep v-sync. But I prefer tearing rather than increased input delay, especially for fast games like this one.

It is for me. I can't stand it, it looks horrible. I just tried with no v-sync and yes, there is less input delay but there is heavy screen tearing.
V-Sync option would be nice in-game, as well as other things too.

[Euphytose]

There's not much tearing in this game actually. The camera only ever moves in "big rooms" or when you switch rooms. So the only tearing you see is when Isaac is walking straight on the "torn" line, which doesn't happen all the time, and when it does you're probably too focused on trying to dodge projectiles anyway.
There's a middle ground though, you can remove part of the delay by liming your framerate to 59, or 74 if you have a 75hz. You can also do that in your driver, though for Nvidia you will need Inspector. Some games also don't run very well when they're limited by an outside source but you can see that pretty fast.