For a flexible racquet, there is going to be an issue of accuracy so to reduce the inaccuracy of the shots of a flexible racquet, will high tensions on the string help with this?
No....not recommended. If the racquet shaft is too flexible it would be terribly difficult to generate any power. Youd have difficulties clearing and smashing.
Flexible racket / light racket are not recommended to go for high string. If not it will be playing with a ping pong pad
probably boils down to training and more usage of that particular racquet to regain accuracy. higher tension on a flexi racquet will not help your accuracy.. it will give you higher repulsion only..which may be harder for you to control/decide where the shuttle to go accurately