At my wits end. In an apartment where there are thick, concrete walls that kill wifi signals for one room in particular - my home office. The one fiber line coming in to this unit is in the living room, at the other end of the apartment.
One solution that has worked reasonably well, in a prior apartment for years and this one for the past year or so, is a TP Link Powerline system. This worked excellently in my prior apartment, no lag or sacrifice of speed. In my current apartment results are much spottier - while it is great when it works, it seems like there is some threshold of appliances that may be on or off in either room (on the same circuit as the router, or the extender via powerline) which degrades the signal significantly - we’re talking 1990s speeds, and sometimes nothing at all. The problem is very reproducible with turning up appliances (especially a bigger one like treadmill), and then once the excess appliances are turned off the powerline system still is very spotty for quite some time after (often until I manually reset the extender and re-detect it). Must be old / cheap wiring in this building compared to the last one; too bad because everything else is better.
What are my options that are reasonable? The obvious one, which a friend did in a similar unit here, is secure cat5 along the corner of the wall/floor. It’d take about 25-30 meters, or about $40 (?), to get the job done. Speed would presumably be excellent, but would need to put effort into making it look ok and will still have a wifi dead zone, with only my PC connected in that room.
The other is a repeater (mesh?), which I have no idea about. Seems this would be better if it works, since this city has concrete walls in used in nearly all apartments and thus this is often an issue (assuming powerline doesn’t suffice). I suppose cost is higher? My key concern is that due to socket availability I’ll end up with a repeater that is basically on the far end of the living room (same as router), or in the office/study near the hallway, but there will still be a small hallway and corner around a concrete wall in the middle and I wonder if that will leave too much of a gap from either approach to provide satisfactory signal to repeat/pick up and solve the problem.