My thoughts
While sequencing is quite often a chore it is (was) an essential part of the DIY part of this hobby. I have once asked for a copy of someone else's sequence so that I could see how they created an effect and I found it way too much effort to map to remap it to my display.
Grumpy...
As others have said, do your sequencing in Vixen and then export and run your show off a pi using FPP. I have been doing this for years. Very simple process with the added bonus that you can continue to work on your sequencing right through the light season without affecting your show and you...
This is an old thread that discussed sound quality when using a Pi and is where I got the fix for my problem by adding a mixer
https://auschristmaslighting.com/threads/pi-audio-quality.9332/
I would park out the front of your house and scan the frequency range looking for an "empty" frequency. (Doing it a few nights around show time as some broadcasters seem to come and go around my place)
And what sort of issue are you having? Could it be your transmitter is the issue or even...
My old computer was sluggish when sequencing with Vixen but I replaced it last year with a i5-4690 processor and 16GB of ram and it is fine now.
Show runs off a Pi 3B
If you want to a cheap voltage stable power supply for testing you can use a computer power supply. https://www.instructables.com/id/Convert-an-ATX-Power-Supply-Into-a-Regular-DC-Powe/
I actually have three in my house setup and have zero issues over many years.
They move while being handled during setup but once the wireframe is mounted it takes less than a minute to roughly straighten any that are way off.
Not really an issue.
yes I initially fell to the same issue, found a nice quiet frequency, had a Tune To sign professionally printed and then found out about the odds rule.
Fixed the sign with duct tape and a sharp knife.