The hosting company identified the following areas which should be addressed in order to reduce the amount of server resources being utilized:
Excessively uncached requests coming from different pages and admin.ajax:
Besides Ajax traffic, most of the uncached requests seem to stem from the wpdiscuz plugin, using those URLs
12797 /wp-admin/admin-ajax.php
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/wp-json/wpdiscuz/v1/update?postId=5159&lastId=4087&visibleCommentIds=4087%2C4085%2C4050%2C4079%2C4072%2C4071%2C4077%2C4083%2C4053%2C4054%2C4061%2C4055%2C4056%2C4080%2C4058%2C4060%2C4057%2C4081%2C4066%2C4068%2C4070%2C4069%2C4062%2C4067%2C4059%2C4063%2C4064%2C4065%2C4073%2C4074%2C4075%2C4082%2C4076 6089 /wp-json/wpdiscuz/v1/update?postId=5173&lastId=4181&visibleCommentIds=4093%2C4094%2C4095%2C4096%2C4102%2C4097%2C4098%2C4099%2C4100%2C4101%2C4103%2C4104%2C4105%2C4106%2C4170%2C4107%2C4108%2C4109%2C4110%2C4111%2C4112%2C4113%2C4114%2C4115%2C4116%2C4117%2C4118%2C4119%2C4120%2C4121%2C4122%2C4123%2C4124%2C4125%2C4126%2C4127%2C4128%2C4129%2C4130%2C4131%2C4132%2C4133%2C4134%2C4135%2C4136%2C4137%2C4138%2C4139%2C4140%2C4141%2C4142%2C4143 5649 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/wp-json/wpdiscuz/v1/update?postId=5027&lastId=3616&visibleCommentIds=3616%2C3608%2C3610%2C3612%2C3614%2C3615%2C3606%2C3607%2C3604%2C3605%2C3598%2C3599%2C3613%2C3600%2C3602%2C3611%2C3597%2C3560%2C3603%2C3609%2C3561%2C3601%2C3562%2C3563%2C3564%2C3565%2C3566%2C3567%2C3568%2C3569%2C3570%2C3571%2C3572%2C3573%2C3574%2C3575%2C3576%2C3577%2C3578%2C3579%2C3580%2C3581%2C3582%2C3583%2C3584%2C3585%2C3586%2C3587%2C3593%2C3594%2C3588%2C3589%2C3590%2C3591%2C3592%2C3595%2C3596 5641 /wp-json/wpdiscuz/v1/update?postId=5159&lastId=4083&visibleCommentIds=4076%2C4075%2C4082%2C4073%2C4074%2C4050%2C4079%2C4072%2C4071%2C4077%2C4083%2C4053%2C4054%2C4061%2C4055%2C4056%2C4080%2C4058%2C4060%2C4057%2C4081%2C4066%2C4068%2C4070%2C4069%2C4062%2C4067%2C4059%2C4063%2C4064%2C4065 5641 /wp-json/wpdiscuz/v1/update?postId=4898&lastId=3166&visibleCommentIds=3166 5165 /wp-json/wpdiscuz/v1/update?postId=5118&lastId=3908&visibleCommentIds=3876%2C3877%2C3878%2C3900%2C3879%2C3906%2C3880%2C3881%2C3882%2C3883%2C3885%2C3884%2C3886%2C3887%2C3888%2C3889%2C3899%2C3890%2C3891%2C3892%2C3893%2C3894%2C3895%2C3896%2C3897%2C3898%2C3901%2C3904%2C3902%2C3903%2C3905%2C3907%2C3908 4816 /wp-json/wpdiscuz/v1/update?postId=5173&lastId=4182&visibleCommentIds=4182%2C4180%2C4179%2C4178%2C4177%2C4176%2C4175%2C4174%2C4173%2C4172%2C4093%2C4094%2C4095%2C4096%2C4102%2C4097%2C4098%2C4099%2C4100%2C4101%2C4103%2C4104%2C4105%2C4106%2C4170%2C4107%2C4108%2C4109%2C4110%2C4111%2C4112%2C4113%2C4114%2C4115%2C4116%2C4117%2C4118%2C4119%2C4120%2C4121%2C4122%2C4123%2C4124%2C4125%2C4126%2C4127%2C4128%2C4129%2C4130%2C4131%2C4132%2C4133%2C4134%2C4135%2C4136%2C4137%2C4138%2C4139%2C4140%2C4141%2C4142%2C4143 4506 /wp-json/wpdiscuz/v1/update?postId=5173&lastId=4182&visibleCommentIds=4182%2C4180%2C4179%2C4178%2C4176%2C4177%2C4174%2C4175%2C4172%2C4173%2C4093%2C4094%2C4095%2C4096%2C4102%2C4097%2C4098%2C4099%2C4100%2C4101%2C4103%2C4104%2C4105%2C4106%2C4170%2C4107%2C4108%2C4109%2C4110%2C4111%2C4112%2C4113%2C4114%2C4115%2C4116%2C4117%2C4118%2C4119%2C4120%2C4121%2C4122%2C4123%2C4124%2C4125%2C4126%2C4127%2C4128%2C4129%2C4130%2C4131%2C4132%2C4133%2C4134%2C4135%2C4136%2C4137%2C4138%2C4139%2C4140%2C4141%2C4142%2C4143 4341 /wp-json/wpdiscuz/v1/update?postId=5173&lastId=4182&visibleCommentIds=4182%2C4179%2C4180%2C4178%2C4176%2C4177%2C4175%2C4172%2C4173%2C4174%2C4162%2C4163%2C4166%2C4164%2C4165%2C4168%2C4167%2C4169%2C4171%2C4153%2C4154%2C4155%2C4157%2C4158%2C4159%2C4160%2C4161%2C4135%2C4136%2C4137%2C4138%2C4139%2C4140%2C4141%2C4142%2C4143%2C4144%2C4145%2C4146%2C4147%2C4148%2C4156%2C4181%2C4149%2C4150%2C4151%2C4152%2C4115%2C4116%2C4117%2C4118%2C4119%2C4120%2C4121%2C4122%2C4123%2C4124%2C4125%2C4126%2C4127%2C4128%2C4129%2C4130%2C4131%2C4132%2C4133%2C4134%2C4114%2C4108%2C4109%2C4110%2C4111%2C4112%2C4113%2C4107%2C4093%2C4094%2C4095%2C4096%2C4102%2C4097%2C4098%2C4099%2C4100%2C4101%2C4103%2C4104%2C4105%2C4106%2C4170 4337 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