Doom 2 Project brutality. Level 30 Icon of sin. Ultra violence (brutal) 

im not overly experienced in the technical side of things but what types of maps are you playing? for eg if i play project brutality with some of the more modern maps and alot of slaughter maps my performance tends to tank cause most maps have everything pre placed and average 1000 plus enemies (i also only play with a rtx 3060). doom eternal by my knowledge uses an algorithm to spawn mobs in dynamically so the encounter can be 50-60 monsters but ur only fighting up to 10 at a time to save on resources.

​@@oyteara5580 uhhhh hontE remastered, marauder (useless cuz he does not spawn), Gauss Cannon add-on and PB staging (my mods), wad: doom II, i tried to download gyodesis' settings but they do not work (I play with GTX 1650)

www.moddb.com/mods/project-brutality =)

i personally cant because im bad at the game =P the super secret head is usually killed with splash damage cause your hitting just above it so instead of the usual hit it with 3 rockets and its dead it now seems to take like 5 bfg blasts directly at it with project brutality hehe.