I’m sure everyone with lockdown situation is looking for things to do…maybe time to clean up the cable clutter behind the equipment rack.
some suggestions include
Moving mains and signal cables way from each other.
Maybe rearrange devices to put most used things with better access if you like.
If you have to have them close or passing each other then X them at 90 degrees and not run parallel.
Keep runs as short as possible so as to pick up less noise.
Don’t coil cables together and if possible not at all. Loops act like small transformers with will create magnetic fields than can interact with one another even at short distances apart.
Disconnect unused interconnects as these can act like arials or antennae for RFI
Remove unused speakers from rooms if you can as these act like resonant devices - sometimes shorting the binding posts can help if no choice to keep in the room or put them front to front in pairs.
Chime in with other suggestions and ill add to my list for a reference.
I think that with the best will in the world a life in Hi Fi and all the associated kit is impossible for 99.9% of the population.
I tried but in the end, you just have to give up
Why clean-up when you can buy better (perfect) cables for some k$ or the high-end cable already in place is clearly not affected by any outside world problems as by the marketing blurb?