I'm trying to play this pack but I get constant micro-stuttering making the game obviously unplayable.
I have an rtx 2070 super,
Intel i5 6600k (OCed to 4.4 mhz)
and 16 gb of ram (of which I have 6 gigs allocated to ftb packs)
Also I'm using the old, non-overwolf launcher because the new one just deletes my packs at random.
The peaks in the Lag-O-Meter in the bottom left are the micro-stutters.
The render distance is set to 12. Fps is limited to 140 via optifine (Speaking of which I tried it without optifine to no avail)
You can check if your Nvidia overlay is disabled
Also test it without Optifine
I said in the OP that I already tried it without optifine. The overlay thing didn't make any difference.
Maybe there is an issue with one of those mods or the map itself