Simple mod that turns the renderscale option into a slider, ranging from 0.1 to 2x renderscale, it might help performance if you're willing to play what looks to be an early 90's doom game
--How to install--
If you ARE using the timed explosives mod and/or minigun mod then delete "options.lua" and rename "optionsTimedExplosives.lua" to "options.lua". Then place options.lua into /teardown/data/ui replacing the original options.lua. Included is "hud.lua" this makes it so the explosion mod and minigun mod can work together, drag this file into the same directory.
If you are NOT using the time explosives mod just take the options.lua file and put it in the same directory as previously stated. (/teardown/data/ui)