Surelly it will be pain once you have been "spoiled" with by fiberoptic.
Keep in mind that for asymetric 5-7mbps downlink you may have 0.5-1mbps uplink. Also if you plan to work remotely in a team then video-conference and screen-sharing quality may be very poor.
For heavy stuff (rebuilding Docker images etc) it is convenient to have some remote ssh dev machine with the top connectivity (AWS, etc).
Other than that invest in some redundant links - research locally available 4G, WiMax or directed WiFi, cable TV operators.
As long as it's a reliable connection it's not all that bad. Annoying, but you adapt.
But having an unreliable line is a whole different story. When things stop working and you can't do anything, can't plan for it - you loose your flow. It might sound funny or even wrong given what's going on there, but this was hands down the biggest boon to my life quality when living in China.
The major impact goes to the productivity, which directly affects business & project management
I currently live in Colombia and every once in a while, around 40-60% of packages drop. I noticed it was a peer connection in Miami, and almost all traffic went through there. Even if I went to an Argentinian IP, it would still go up north to Miami and then south (my guess is cheap residential peering connections). Anyways I basically got a server from a provider that bypasses this peer connection, and setup a VPN. When my internet starts misbihaving, I simply connect thru that VPN and it fixes the package loss. You adapt.