Well alternatively you could move to a lower congested area. Been living in Rongai since I was like 8, automatically making me a native. I moved last year about 2 kilometres away from Rongai Town and that was the end of the network congestion problems i had been experiencing on both Saf and Airtel when I was in a flat deep in the heart of Rongai.
I'm on the Airtel postpaid unlimited package and used to get around 2mbps-3mbps, maximum 4mbps, sometimes my connection wasnt even going through at all especially in the evenings between 5-10pm.. Used to complain to them on Twitter, they'd raise the issue, make a follow up a short while after, fix the problem temporarily then after some 3 or so weeks of internet in heaven, hell would all over a sudden come to haunt me. Sometime last year I moved to Fedha estate Embakasi and it was a nightmare, I could get a 3G signal in the apartment but no calls or internet connection would go through, unless i went to the balcony ., only Saf and Orange could manage.
Moved back to Rongai late last year but some 2kms away from the main hub of the town and it has paid off.., my speeds are between 10-20 mbps, the signal is strong , i only have to worry bout general network downtimes, which rarely happen, and my rent is cheaper too in a rather quiet environment .
My bro @Lukirdem still lives deep in the heart of Ronga and he also has the same Airtel Unlimited package, when i send him screenshots of my speedtests or when he comes over he wants to choke me
It's still just about compromise, just as @martingicheru compromised the additional 10k i compromised that additional 2kms which meant an extra 30 bob on top of the mostly 100bob fare from the CBD to Rongai and vice versa