As of my knowledge cutoff in September 2021, the Bitcoin network does experience congestion at times due to its limited block size and the high number of transactions being processed. However, there is no single definitive solution to traffic congestion on the Bitcoin network. Several approaches have been proposed and implemented to mitigate congestion and improve scalability. Here are a few notable solutions:

Segregated Witness (SegWit): SegWit is a soft fork upgrade that was activated in August 2017.

Lightning Network: The Lightning Network is a layer-2 scaling solution built on top of the Bitcoin blockchain.

Larger Block Sizes: Some argue that increasing the block size limit would allow more transactions to be included in each block, thereby reducing congestion.