I am using 4.8 and have few issues....and I only use it for WGT, but as we know, things can deteriorate quickly lol.
I do use a dinosaur release of Flash (18.0.0.22) as it has always given me a good meter....and my philosophy is. if it ain't broke......
That said. I only lose certain settings daily (when I exit WGT - but have auto log in enabled) including Top Tracer, Sound, HIO challenges, Lessons, Hole Info,meter boost and credit offers
All easily fixed and as I do not play daily, it is no big deal....