Hello Dragon Saga Friends!
We investigated and found out that this problem appears mostly with Intel Core i7 processors.
The problem seems to be the Hyperthreading. You can disable it in your BIOS. If you want to disable it, you should do a google search how this can be achieved. Please note that you do this on your own risk.
If you go further into the Hyperthreading subject and read a bit more by using a goolge search you'll find out that the performance boost with enabled Hyperthreading is not significant, but disabling it makes games run more stable. This is not only the case for Dragon Saga.
We have now several players who confirmed that turning off Hyperthreading works, but this might not work for everyone.
At the moment we have sadly no way to fix this problem on the game site.
Update: It turns out that the problematic combination seems to be Intel Core i7 + Windows 10 + Hyperthreading enabled