How long does ‘pending awaiting approval’ status last?

I submitted on Saturday, had to provide additional documentation:

1. Letter from employer.

2. Boarding pass and stamp showing I left Thailand.

I’m applying from the UK.

Hi everyone!

I am travelling with my partner (Russian woman).

Today both of us were issued tourist visas in Penang, Malaysia.

Advice for anyone applying in Penang:

1- no appointment; just turn up no later than 7am in the morning (there was already a queue). I got place #9 and she got #6, there was a group of 30-40 people who turned up shortly after us;

2- dress code is strict - men - long trousers, women skirt below knee length, everyone needs a mask, people got turned away for not following this code;

3- you need 2 passport photos, however the guys selling food and drinks opposite the entrance lied that we needed three photos and offered to do extra photos for her when they saw her filing in her form with all the stuff on the table.

Want to drive from Thailand to Vietnam.Anyone have experience or knowledge?