Do I have to manually update crowd-integration-client jar for connected applications?

[SG]

While looking into an issue regarding increased page load times I read about the crowd integration client and that its version on authenticating apps should match the one on crowd.

The latest client jar in our installation is

C:\Program Files\Atlassian\atlassian-crowd-3.7.0\client\crowd-integration-client-3.7.0.jar

On the bitbucket server there are multiple crowd-integration files, not exactly matching the naming or version

C:\Atlassian\Bitbucket\6.4.0\app\WEB-INF\lib

crowd-integration-api-3.3.3-platform5-jdk11-m02.jar
crowd-integration-client-common-3.3.3-platform5-jdk11-m02.jar
crowd-integration-client-rest-3.3.3-platform5-jdk11-m02.jar

Confluence looks about the same but with even lower versions

14.03.2019 02:10 74'363 crowd-integration-api-2.10.4.jar
14.03.2019 02:10 43'877 crowd-integration-client-common-2.10.4.jar
14.03.2019 02:10 78'715 crowd-integration-client-rest-2.10.4.jar
14.03.2019 02:10 9'482 crowd-integration-seraph-2.10.4.jar

My questions are:

1. Do I have to manually update this crowd integration client?

2. Could the version mismatch possibly be the reason for +8 seconds on initial page loads?

Thanks for any help or suggestions