Units seem to always be more powerful in the hands of the ai (range, damage and health) the best counters i have found to the spider droids are the AT-TE, mass swarms of AT-PE (whichever one it is with the big gun as the main weapon with two legs that heavy factorys spawn as garrison), turbolasers heavily damage spider droids so keep them safe, Laats as the ai doesnt decide to shoot at aircraft often outside of aa turrets, mass swarms of the hover tanks that fire rockets and have a laser turret. The ai cant spam an army of spider droids at you due to pop cap and never rely on orbital bombardments/bombing runs as they have been nerfed from the base game it seems (thank god). If you are defending just spam AT-TEs at them as the only thing you need to be wary of then are flak guns.

No this mod has had issues for years. Just make 5 droid fighters with the droid swarm and watch 50 supply of republic fighters worthless

I'd restore the ground system to normal and probably tweak the pop value of the CIS capital ships to cut down on at least donut spam