So you don't want to be using the command --big-typos. This is only for if you don't know how many words and/or which words are incorrect. --big-typos 3 will swap every combination of three words in your seed phrase with every possible three word combination. This will give 12*11*10*2048*2048*2048 = 11 trillion combinations, which is about 130 days at 1 million combinations per second. Since you know the locations of your three missing words, you only need to search 2048*2048*2048 = 8.5 billion combinations, which is about 2 hours at the same rate. This is likely why you computer is crashing.

It is possible to do everything from the command line. I can build a command for you to run, but I need some more info first. Please answer all of the following:

Are you certain it is words 1-3 you are missing?
Are you certain words 4-12 are correct and in the correct order?
Are you trying to recover a legacy (addresses start with 1), nested segwit (addresses start with 3), or native segwit (addresses start with bc1) wallet?
Do you know an address from this wallet which has received or spent coins? Ideally the very first address in the wallet.