Ergonomics is what it’s all about with a stock/chassis. If it feels comfortable to the shooter they’ll naturally shoot it better. That being said having one that has several adjustments, such as LOP and an adjustable cheek riser can make a world of difference. Not everyone is out to shoot tiny groups and there are always trade-offs such as weight (typically) with more adjustable platforms.
I’ve had excellent results with both the KRG Bravo chassis and MDT’s XRS, they’re very comfortable for me, once I have them dialed in for my body and shooting style, in comparison to the factory stock, so I shoot well from behind them.
Hope this helps. Feel free to DM