It seems to me that you just need to pause for a while, do some assessment of your setup in your room (either by ear or, I think better - certainly quicker and more objective, using REW software with a measuring microphone to measure what is actually happening in your room), and experiment with speaker and listening positions, then assess any appropriate and acceptable room treatment, before faffing around with fancy cables, cable supports, etc etc. There are many relevant threads on this forum, but I commend this one in particular -
a lot of reading, but a lot of valuable info as well.
This thread is also valuable, but rather more extensive and an awful lot to wade through and digest: