SourabhFrom A9 to 10 you upgraded again? Then your problem solved?
Hii, recently i rolled back to A9 from A10 due to these problems and it worked for me. But for a try, i again updated the latest version and did some changes. From last 5-6 days, no restart problem and battery backup is around 9-10 hours (100 % to 3%)
Format your phone and dont update Google chrome and Android System Webview from playstore.
Also disable the following apps from your device as shown in the screenshot.
I hope it will work for you too.
Restart, Battery backup solved for Rog 2