Subscribers may fail to match some topics

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In shared memory mode, after the number of topics in the system increases, the probability of the subscriber program does not match the publisher.

After releasing and printing, it is confirmed that the data information of some topics is lost in the EDP message. Do you know why? How to optimize this situation, and can I modify which configurations to send EDP information multiple times?

There are multiple programs subscribing to this topic in the system. Is it the publisher's EDP processing pressure caused by too many subscribers

The subscriber prints as follows:
writer proxy "fastdds statistics physical data"
writer proxy "fastdds statistics history2history latency'
writer proxy "fastdds statistics network latency"
reader proxy "ImpleResultInfo"

In fact, the topics published by the publisher are as follows:

writer "fastdds statistics physical data"
writer "fastdds statistics history2history latency'
writer "fastdds statistics network latency"
reader "ImpleResultInfo"
writer "gpsInfo"
writer "ctrlbackInfo"
writer "FaultInfo"