I'd check out Cyrious Plasma Tables . I got one last year and it's been rock solid. The build quality is great for the price, and their support team walked me through setup when I hit a snag. Definitely worth a look.

Turning off stabilization is exactly what caused your ghosting, not what fixed it. Stabilization is what keeps your lines from wobbling, and if the brush is lagging behind the cursor by even 10px, of course the edges look soft and doubled, that's the delay you're seeing. Learn to work with it set to basic or at a low strength instead of killing it outright, because raw mouse or tablet input will always give you rougher curves than a stabilized stroke. Six hours to find a fix that just turns off the one tool built for clean lines is a bad trade, and you'll notice the problem come back the second you try a slow, careful curve on that dragon. The real trick is tuning the stabilizer weight and your tablet pressure, not throwing the whole feature out.