In my history with these style games, I can say they are definitely high variance tables. Reason being because logic is out the door. I've found that the best way to beat these games is to do two things.
First, always buy in for the max and turn on "auto chip up". The reason is because you HAVE to take advantage of the big pot situations when you are major leader.
Second, loosen up your preflop play. These tables are known for overplaying (top pair calling all the way down even when every draw comes in, chasing draws with negative equity, and calling down with second or worse pair "just because"). So, you have to take advantage of these situations by making them pay when you hit, if they are going to show down, make sure it costs them, and always, I REPEAT ALWAYS, evaluate every street compared to their play.
In these games I have a system. I use a HUD, I sit down and only play premium hands for the first hour, and when I'm in the pot I make it pricey (raising 10BB preflop and pot sized bets after the flop). After that hour, I check my HUD and start taking advantage of the people's weaknesses (if they are overplayer's I keep it pricey, if they are rocks, I small ball them, etc.) and I play A LOT of hands preflop (although I have a 5-10% rule: never risk more than 5% of your stack preflop on suited connectors or gappers and never risk more than 10% set mining with small to mid pairs). Then once I get 250% of the max buy in, I sit out and go to another table. This has netted me a positive growth pretty quickly and effectively. I hope it helps.
Also, don't do what I did and put all of your money on a higher cash table hoping to succeed. I've gone bust 3 times in cash games after building a $100 + bankroll from no deposit, all because I wanted to "jump up" when I'd get on a good run. I hope this helps.