I always have problems with interpreting in a question what is meant by performance when discussing a safety related feature
In simple form if you use the engine to power/heat something other than for pure thrust than you will either decrease available thust or increase temp and fuel flow to maintain thrust constant.
In the case of bleeding the compressor, you do gain some stability margin increase (against an engine surge condition) if you thought that you needed it.
I presume that safety has to be met first so you can always work out the priorities for many trades