IC29, IC48: Add GND vias, move decoupling caps a bit closer
These ICs can work up to 500Mbps which means that their output rise/fall transitions will be fast. Their power delivery should be improved by adding separate vias for each GND pin to lower inductance and try to move the decoupling capacitors closer to the package, minimizing the loop they form with the IC's power and gnd pins. The screenshot below shows the problematic points with IC29 but it's similar for IC48.