Problems with hydrogas suspension systems were solved long time ago. For example French Leclerc, british Challenger 1 & 2, Japanese Type 90 and Type 10, and also South Korean K1/K1A1/K1A2 and K2 tanks uses it and it seems there are no problems with it.
Turkish Altay will also use hydrogas suspension system, and also GDLS designed their M1 tank hull to be capable to use different suspension types, hydrogas suspension system was tested for M1 in the past, there is ready for production such suspension system for M1, and GDLS talks with US Armed Forces about replacing torsion bars suspension system with this new hydrogas suspension system.
Hydrogas suspension system have other, more important advantages over torsion bars than smoother ride. Hydrogas suspension system is lighter, it's actually easier in maintnance and repairs as each unit is individual module installed to hull via screws, so if it is damaged it can be quickly replaced or it can be blown off completely but without any internal damage making repairs difficult. Torsion bars on contrary, if they are damaged, the torsion bar itself might bend or even break in to pieces, which makes repairs a nightmare, I know this from actuall tank crew member who was in combat and had experience with reparis down to such suspension after a mine blast bended torsion bars.
Also if one torsion bar is damaged, weight of vehicle is distributed differently, and if crew waits too long with repairs, other torsion bars will break eventually as well.
DRDO made actually a good decision to use hydrogas suspension system, as it have more advantages in general as a design, to torsion bars or other suspension systems.
Israelis also use interesting suspension system that is in form of completely externally mounted module, each unit is such separate module, that is bolted to the hull sides and can be easy replaced for maintnance or repairs.
It's only drawback is weight, much larger than torsion bars or hydrogas suspension systems.