Upgrading a normal PC for game development @ Rs 15k

[gta5]

My Pc's Specs

Processor Name- Core i5
Processor Generation-8th Gen
RAM- 4 GB
RAM Type- DDR4
HDD Capacity- 1 TB
Processor Variant- 8250U

you are probably being limited by Ram with only 4gb even in your laptop , .. but still look at GPU and CPU usage as well and see if it reaches 90-100 % ..
can you borrow more RAM for laptop from friend/repair shop just for testing purposes ? and test after that , to see if it fixes it and whether or not you need more GPU power also

 

[SaiyanGoku]

The laptop is better than the PC you are building

I said the same to him in post #27

Buddy, frankly sell that laptop off after repairs and get a proper desktop assembled for work. 20k for entire config won't even get you anywhere close to your laptop's performance.