Quick answer: Construct 3 object with 6+ effects rendering slow? Each effect is a render-target pass - audit; combine similar effects into one.
Boss has bloom + chromatic + vignette + scanlines + warp. Fps drops by 30%.
Combine effects
Author one shader that does bloom + chromatic. Single pass; one render target.
Or apply at layer level
Layer-wide effects share one pass for all objects. Cheaper than per-object.
Limit stack depth
Project guideline: max 2 effects per object. Document; enforce.
“Effects are render targets. Stacks multiply cost.”
Audit effect counts per object. If you have a hot character with many effects, the consolidation is the path to performance.